Re: Migrate a many-to-many field to an explicit intermediate ("through") model?

Hi all,

just wanted to let you know that I was successful!

I followed Gergely's final recipe, using RunPython for the data migrations and separate
migration files for each of the steps.

For step 3 (the deletion of the ManyToManyField) I temporarily had to remove the
django.contrib.admin from the INSTALLED_APPS, because I was referring to the old
ManyToManyField in my app's admin.py setup, which in turn was processed while running
`./manage.py makemigrations`.

Overall, this worked very well.

Many thanks to you both for your help!
:-)

Am 23.07.2015 um 22:37 schrieb Carl Meyer:
>> Meanwhile it might worth a question to the devs (or a more thorough
>> search on the topic) to understand why you can't switch from a simple
>> m2m field to one with a through option.
>
> Just because it's a bit complex to implement, and nobody has implemented
> it yet.

Well, if I understand this correctly, https://code.djangoproject.com/ticket/23034 has a
reviewed PR that implements this, but unfortunately the original author has not updated
the PR for several months...

Best regards,
Carsten

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